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Now Playing: 03-30-12 Marketplace Tech Report

"Monetization": for social networks like Twitter and Facebook, it's the most essential business issue they face. How do you turn all those eyeballs into money in your pocket -- and do it without driving people away? One major social networking site has declared that it has no intention to ever monetize its audience. CaringBridge lets those facing serious health issues set up pages to network with the people who care about them. It's a nonprofit, but it's potentially big money: half a million users a day who might follow a link to buy cards or flowers, or whose data could be valuable.